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Serjik [45]
3 years ago
7

Which option below describes the main difference between analog and digital technology?

Physics
1 answer:
zavuch27 [327]3 years ago
6 0

Answer:

,dhfjhdj

ddddddddddddddddddddddddddddddddddddddddddddddddddddddddddddd

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Which scientist and atomic model are correctly matched
Novosadov [1.4K]

Answer:

Rutherford and atomic model are correctly matched.

7 0
3 years ago
Joe is attempting to ramp his bicycle over a row of burning tires. If the ramp has a launch angle of 20 degrees, and Joe can ped
Luden [163]
Answer is 6 tires.

This is a projectile question.

First make sure units are consistent - express speed in m/s.

20 km/h = 20000m / 3600 s = 5.56 m/s

Assume the takeoff point of the ramp is at ground level (height, h, = 0m). We need to determine how long Joe is in the air, and use that time to calculate the horizontal distance he traveled.

Joe is traveling 5.56 m/s on a ramp angled at 20 degrees. There are vertical and horizontal components to his speed:

Vertical speed = 5.56sin20 = 1.90 m/s
Horizontal speed = 5.56cos20 = 5.22 m/s

An easy way to proceed is to calculate the time it takes for Joe’s vertical speed to reach 0m/s - this represents the time when Joe is at his maximum height and is therefore halfway through the trip. Double whatever time this is to find the total time of the trip. Remember he is decelerating due to gravity:

Time to peak:
a = Δv / Δt
-9.8 = -1.9 / Δt
Δt = 0.19s

Total trip time:
0.19 x 2 = 0.38s

Now that we have the total tome Joe is in the air, we can find the horizontal distance he traveled:

v = d / t
5.22 = d / 0.38
d = 1.98m

Now divide this total distance by the length of an individual tire to find the number of tires he will clear:

1.98 / 0.3 = 6.6 tires

Therefore he can jump 6 tires safely (he will land in the middle of the 7th tire).

Lots of steps I know but just try to think of the situation and keep track of the vertical and horizontal things!
4 0
3 years ago
Determine the speed of sound on a rainy day with the temperature of 18 degrees celsius.
dexar [7]

Answer:

18 degrees celcius = 64.4

Explanation:

Fahrenheit

5 0
3 years ago
The speed of light is now defined to be c-2.99792458 x 10^8 m/s
Harman [31]
Yes, that statement is loaded with veracity, and is true as well. Did you have a question to ask ?
8 0
3 years ago
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why would scientists use a control sample that has no dna from bighead carp in edna surveillance? a. to amplify the dna in small
Karolina [17]
I think the correct answer from the choices listed above is option D. Scientists would use a control sample that has no dna from bighead carp in edna surveillance in order to  to verify that no dna has contaminated the gel. It would eliminate certain errors in the experiment.
3 0
3 years ago
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